7x + 2y = 10 3y = 4x - 5
2y = -7x + 10 y = 4/3x - 5/3
y = -7/2x + 10
to be parallel the slope needs to be the same they are not
to be perpendicular the slope is the negative reciprical i.e. -7/2 the other slope needs to be 2/7 they are not
therefore they are coinciding